21241440

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1$

素因数の和:187

約数の個数: 240

約数和(自身を含む): 82328400

約数和(自身を除く): 61086960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 32, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 81, 88, 90, 96, 99, 108, 110, 120, 132, 135, 144, 149, 160, 162, 165, 176, 180, 198, 216, 220, 240, 264, 270, 288, 297, 298, 324, 330, 352, 360, 396, 405, 432, 440, 447, 480, 495, 528, 540, 594, 596, 648, 660, 720, 745, 792, 810, 864, 880, 891, 894, 990, 1056, 1080, 1188, 1192, 1296, 1320, 1341, 1440, 1485, 1490, 1584, 1620, 1639, 1760, 1782, 1788, 1980, 2160, 2235, 2376, 2384, 2592, 2640, 2682, 2970, 2980, 3168, 3240, 3278, 3564, 3576, 3960, 4023, 4320, 4455, 4470, 4752, 4768, 4917, 5280, 5364, 5940, 5960, 6480, 6556, 6705, 7128, 7152, 7920, 8046, 8195, 8910, 8940, 9504, 9834, 10728, 11880, 11920, 12069, 12960, 13112, 13410, 14256, 14304, 14751, 15840, 16092, 16390, 17820, 17880, 19668, 20115, 21456, 23760, 23840, 24138, 24585, 26224, 26820, 28512, 29502, 32184, 32780, 35640, 35760, 39336, 40230, 42912, 44253, 47520, 48276, 49170, 52448, 53640, 59004, 60345, 64368, 65560, 71280, 71520, 73755, 78672, 80460, 88506, 96552, 98340, 107280, 118008, 120690, 128736, 131120, 132759, 142560, 147510, 157344, 160920, 177012, 193104, 196680, 214560, 221265, 236016, 241380, 262240, 265518, 295020, 321840, 354024, 386208, 393360, 442530, 472032, 482760, 531036, 590040, 643680, 663795, 708048, 786720, 885060, 965520, 1062072, 1180080, 1327590, 1416096, 1770120, 1931040, 2124144, 2360160, 2655180, 3540240, 4248288, 5310360, 7080480, 10620720, 21241440]

約数ペア:

[(1, 21241440), (2, 10620720), (3, 7080480), (4, 5310360), (5, 4248288), (6, 3540240), (8, 2655180), (9, 2360160), (10, 2124144), (11, 1931040), (12, 1770120), (15, 1416096), (16, 1327590), (18, 1180080), (20, 1062072), (22, 965520), (24, 885060), (27, 786720), (30, 708048), (32, 663795), (33, 643680), (36, 590040), (40, 531036), (44, 482760), (45, 472032), (48, 442530), (54, 393360), (55, 386208), (60, 354024), (66, 321840), (72, 295020), (80, 265518), (81, 262240), (88, 241380), (90, 236016), (96, 221265), (99, 214560), (108, 196680), (110, 193104), (120, 177012), (132, 160920), (135, 157344), (144, 147510), (149, 142560), (160, 132759), (162, 131120), (165, 128736), (176, 120690), (180, 118008), (198, 107280), (216, 98340), (220, 96552), (240, 88506), (264, 80460), (270, 78672), (288, 73755), (297, 71520), (298, 71280), (324, 65560), (330, 64368), (352, 60345), (360, 59004), (396, 53640), (405, 52448), (432, 49170), (440, 48276), (447, 47520), (480, 44253), (495, 42912), (528, 40230), (540, 39336), (594, 35760), (596, 35640), (648, 32780), (660, 32184), (720, 29502), (745, 28512), (792, 26820), (810, 26224), (864, 24585), (880, 24138), (891, 23840), (894, 23760), (990, 21456), (1056, 20115), (1080, 19668), (1188, 17880), (1192, 17820), (1296, 16390), (1320, 16092), (1341, 15840), (1440, 14751), (1485, 14304), (1490, 14256), (1584, 13410), (1620, 13112), (1639, 12960), (1760, 12069), (1782, 11920), (1788, 11880), (1980, 10728), (2160, 9834), (2235, 9504), (2376, 8940), (2384, 8910), (2592, 8195), (2640, 8046), (2682, 7920), (2970, 7152), (2980, 7128), (3168, 6705), (3240, 6556), (3278, 6480), (3564, 5960), (3576, 5940), (3960, 5364), (4023, 5280), (4320, 4917), (4455, 4768), (4470, 4752)]